.~ Additional key or combination control of individual closure
DEFINITION
Classification: 49/16
(under subclass 15) Device comprising a plurality of closures and a closure restrainer on each closure, which restrainer requires a specially contrived, insertable implement, or a prearranged secret or nonpublic order of movement of elements in order to be operated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
24, for other closures, each with an individual control, and a remote master control.